In all honesty - that sucks. Had the same issue at a previous apartment complex where I lived for a year and my clothes kept the scent for months after I moved out. I’d recommend a strong air purifier and air fresheners in each room. The renuzit ones can be found at CVS (best for closet/bathroom) and the Febreze/Glade plug-ins help as well for larger spaces. Try and keep the windows open when the temperatures aren’t as cold. And invest in some fabric spray